Apparatus for cooling carbonic acid during its compression.



H. MURY.

APPARATUS FOR COOLING CARBONIC ACID DURING ITS COMPRESSION.

APPLICATION FILED JUNE 3. I914.

1,184,370. I Patented May 23,1916.

;' 5-1. PA. @FEUWE.

HANS MIIRY, OF ZURICH, SWITZERLAND, ASSIGNOR T6 HERMANN FRISGH, 0F ZURICH,

SWITZERLAND.

APPARATUS FOR COOLING OARBONIC ACID DURIN G ITS COMPRESSION.

Application filed June 3, 191.4.

To all whom it may concern:

Be it known that I, HANS Mt'iRY, a citizen of Switzerland, residing at Zurich, neue Beckenhofstrasse 15, Switzerland, have invented certain new and useful Improvements in Apparatus for Cooling Carbonic Acid During Its Compression; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to apparatus for cooling carbonic acid during its compression and has for its object to overcome certain disadvantages in existing apparatus. I

My invention is particularly applicable to the collecting and compression of the carbonic acid resulting from the fermentation of beer Wort. For this purpose it is necessary that the gas be not too highly heated by the compression, otherwise the ethereal substances of the wort contained in the gas will be destroyed.

Many apparatus have heretofore been constructed with a view to the accomplishment of the desired result, but without success. For example, in one of the known methods the carbonic acid is absorbed immediately after its generation in water during its passage through compressors and pipes, and maintained cool. The mixture should not exceed a temperature of 10 R. The gas is immediately separated from the cooling water, which latter is repeatedly used for absorbing and releasing fresh quantities of carbonic acid gas. By the continued cir-' culation and the absorption of repeated quantities of gas, the water becomes heated from the heat of compression of the gas, and the gas is also heated to this temperature. Furthermore, the water soon becomes saturated, inwhich condition it has a chemical, solvent action on the metal of the pipes. Another disadvantage of this method is that the unavoidable heating of the mixture causes water vapors or steam to be carried over into the gaseous acid storagereceptacle, from which the acid gas is drawn to saturate the beer. I All these objections are overcome by the invention forming the subject matter of this application, and I have the addi- Specification of Letters Eatent.

Patented May 23, 1916.

Serial No. 842,679.

tional advantage of cooling the gas during its compression, and the complete separation of the gas from the cooling water without affecting the value of the ethereal substances that follows the gas.

In the accompanying drawing I have illustrated an apparatus for eifecting the cooling and compression of carbonic acid gas according to my invention.

The gas coming from the wort passes through pipe C and then passes by a short pipe 13 to the compression cylinder A. The cooling water passes through pipe I) and sight-glass F also into pipe B, and both air and gas enter cylinder A together. The quantity of water pas ing through pipe D is controlled by a temperature controller E of well known construction, supplied with water from a suitable system and under pressure, through a pipe N. The gas-water mixture passes from cylinder A into a containerG, and the quantity of water passing through D is dependent upon the tem perature in container G, which controls the regulator E, which is placed directly on the container 0; that is to say, the greater the heat of the mixture, the greater will be the quantity of water that is allowed to pass through E and D whereby the temperature of the mixture is maintained substantially constant. Such a uniformity of temperature as is attained by placing the controller E directly on the container G has not been attained heretofore in other apparatus. This uniformity of temperature is of especial importance in the compression of car bonic acid gas.

By the automatic control of the cooling water, as in my invention, a uniform compression temperature is attained, which has not been possible heretofore, because the compensation for the temperature changes has not been direct.

From the container G the uniformly compressed carbonic acid gas with its cooling water vapor carried by or mixed with the gas also separates, and the water descends into a container K from which it passes to a separator L of any desired construction. The cooling water is used only once. The compressed gas, completely separated from the coolin water, is discharged from the chamber 1; through a pipe M to the storage tank, in which no water condensation will take place.

I claim 1. In apparatus for compressing carbonic acid gas, the combination with a compression cylinder A and means to supply carbonic acid gas thereto; of a cbntainer G directly connected to the discharge side of said cylinder, and a temperature controlled water-supply device E connected to said chamber, said device controlling the quantity of cooling water admitted to said cylinder, in order to act directly on the temperature of the mixture of cooling water and compressed acid gas.

2. In apparatus for compressing carbonic acid gas, the combination with a compression cylinder and means to simultaneously admit gas and cooling water to the cylinder; of a chamber G directly connected to the discharge end of said cylinder, a controller E on said chamber actuated by temperature of the mixture and controlling the quantity 7 of cooling water supplied to said cylinder, a downwardly inclined expansion conduit H, into which said chamber G discharges,

and an expansion chamber J at the end of said conduit H, the water vapors condensing in both, the expansion conduit H and the is discharged, means in said chamber to in-V crease the quantity of absorbent admitted to said cylinder in accordance with the temperature of the mixture, and means to permit the separation of gas and absorbent to separately discharge them. V

In testimony that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

HANS MURY.

Witnesses WILH. REINHARD,

AUGUST Runes.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents 'Washington, D. G. r 

